Earthlight will appear in an earthquake. How did this phenomenon come about?

What is terrestrial light? Many people may not be familiar with this, and the ground light is a terrible thing.

Why do you say that? Because the appearance of terrestrial light means that an earthquake is coming.

1976 before the Tangshan earthquake in China, many people saw the ground light. What is the reason for the formation of terrestrial light?

What is terrestrial light?

Ground light refers to the phenomenon that when an earthquake occurs, people can observe the sky shining with the naked eye. Before the earthquake, the phenomenon of terrestrial light will be very prominent, and the time when terrestrial light appears mostly coincides with the earthquake.

But a few of them were seen before or shortly after the earthquake. Most of them are strip lights, flash lights, column lights, sheet lights and so on, and their colors are also different.

Ground light in China before Tangshan earthquake;

On July 27th, 1976, a nurse was on the night shift. Because of the hot weather, she went outside to enjoy the cool, and the sky was gloomy.

But suddenly a cloud with a strange shape appeared. Strangely, it is neither red nor purple. The northwest wind is as bright as the day.

Farmers outside the suburbs saw a big fireball coming out of the ground and flying in mid-air until it went out.

Several other melon farmers saw that the sky not far from them suddenly lit up, making the dark night sky white and bright, and the watermelons in the field could be seen clearly.

Soldiers in the northern military camp of Tangshan found that the underground steel bars would burst into sparks inexplicably. As a result, an earthquake measuring 7.8 on the Richter scale occurred at 3: 42 the next morning, and the whole city was razed to the ground, killing 240,000 people.

Ground light before foreign earthquakes;

1. 1966 An earthquake occurred in Tashkent, the Soviet Union. An engineer heard a rumble in the distance, and a dazzling white light flashed for about a few seconds. Then the earthquake came, and it was dark after the earthquake.

2. 1968 During a series of earthquakes in Dai Song, Japan, the first batch of "seismic light" photos were taken at Yeshuiyu, Iwaoka Seismic Observatory.

Some show red stripes in the sky, just like the drooping northern lights; Some look like blue twilight in the distance.

1995 before the Kobe earthquake in Japan, some residents also reported seeing orange flashes.

Reasons for the appearance of ground light:

There are different opinions about the causes of terrestrial light, and there is no conclusion so far.

It is generally believed that the luminescence of the low-altitude atmosphere before the earthquake is a gas discharge phenomenon, and some people think that the piezoelectric effect of the timely crystal in the rock can produce a strong electric field.

Others think that underground water flow can produce high pressure.

Some people even think that the fireball light is the natural gas escaping from the ground and exploding near the surface.